you do the opposite:
520/8=70
70*12=840.
she is thinking of the number 840
Oh my gosh I did this in fourth grade!!! I can help
Answer:
-3x+6
Step-by-step explanation:
-2x - 1 - x + 7
collect like terms and calculate:
-3x+6
Answer: A)
The first one because the x don’t repeat